End-1999 Tantrix Online Tournament Elo Ratings

Click here for the CURRENT Tantrix Tournament Elo Ratings


The end-1999 Elo ratings for 63 players can be found below. The average rating has been increased slightly too, but the rating system is now reasonably stable, ready to be updated on a tournament by tournament basis in 2000.

As previously promised, in order to limit distortions, all ratings have been recalculated as if all 616 tournament games played in 1999 were a single tournament. With each run of the calculations, rating changes affect AORs which lead to more rating changes. The calculations were iterated about 100 times until the ratings of all 63 players were consistent with each other, i.e. did not change any further with additional iterations. The ratings for each tournament have been recalculated accordingly too, to show how players' performance in different tournaments varied.

The first ratings of the year 2000 will be posted in mid-May, soon after the last few games in the Pan-American Championship have been played.

Ratings based on a low number of games or on performances in a single tournament are not very reliable at all, so there are two rating lists below:

1. The Official List - includes those with G >= 15, where G is a measure of the number of games played - see the notes after the lists. This generally means that players have played in more than one tournament or have reached the semi-final stage of the World Championship or of one of the WTC Plate competitions. The ratings based on a single tournament should still be treated with the most caution.

2. The Unofficial List - includes those with G < 15, all of whom have only played in one tournament. If you need any convincing that ratings based only on a single tournament are less reliable, note that four of the top five players in the unofficial list have higher overall ratings than people who finished well ahead of them in the tournament each of them actually played in - it's very hard to maintain 1900-1950+ performance over two or more events.

The best way to compare those on the official and unofficial rating lists is to look at the Tournament Seeding List.

If you want to check that I have not 'fixed' the ratings ;-), please email me and ask for the Excel spreadsheet with all of the data and calculations

For a key to what the columns mean, see below the rating list. Click on one or more of the links at the bottom of the page for notes, explanations, rating rules, tournament categories and Tantrix Master titles - comments are welcome.

Single tournament performances at ITM norm level (> 2000 - see the titles section) are in red, as is the bonus ITM norm for winning the WTC

The order of individual tournament ratings for all-play-all tournaments will closely match the positions in the tournament itself. However, in a knockout tournament, finishing positions and ratings will sometimes tell a very different story. The player who wins a knockout tournament may well not get the top rating for that tournament, especially if they had a relatively easy draw and/or only just scraped through some of their matches.

In the same way, taking the ratings as a whole, the Elo World No. 1 should be the strongest player overall (there still haven't been anywhere near enough tournaments to say this for certain though and the No. 1 in the list has only played in one, albeit the biggest one), whereas the World Champion may be the player who is best at repeatedly doing just enough to win at the crucial times in matches - both of these are impressive!

Tantrix Tournament Elo Ratings - Official List (G>=15) at 31 December 1999
Introduction to Tantrix Tournament Elo Ratings
International Tantrix Master (ITM) norms awarded in 1999
Click here for the current Tournament Seeding list
Click here to return to the main Tournament Results Page
Click here to return to the main Tantrix Tournaments Home Page
(click a tournament name to see results for that event only)
PLAYER DETAILS 1999 OVERALL ELO RATING Current INDIVIDUAL TOURNAMENT RATINGS
Pos Name Country T G TP % Fctr AOR * Elo * Lobby Masters Open Contl World
Rating Nickname G Elo G Elo G Elo G Elo
 
1 Matthew Peek NZL 1 23.0 55.9% +084 1938 2023 Pekko             23.0 2023
2 Britta Steude NZL 3 37.0 58.4% +119 1863 1984 Bdot 8.0 1955 16 2065     13.0 1901
3 Mike McManaway NZL 3 41.0 56.1% +087 1888 1975 mikem     16 2052 9 2056 16.0 1853
4 Ben Trumbore USA 2 22.0 59.0% +129 1842 1972 Crispy         7 2088 15.0 1917
5 Simone Puterman RSA 2 16.5 56.2% +089 1877 1967 IrcMaidon         10 2054 6.5 1833
6 Zenon Kowalczyk AUS 3 39.0 56.1% +086 1874 1961 Zazza 8.0 2003     9 1960 22.0 1946
7 Jamie Sneddon NZL 2 34.5 55.1% +073 1886 1960 Ridcully         9 1937 25.5 1968
8 Laurent Berguin FRA 2 26.0 52.4% +034 1908 1944 lolo 2.5 1784         23.5 1961
9 Steven Trezise GBR 4 49.0 53.1% +044 1876 1921 steven2 8.0 1825 16 1914 10 2044 15.0 1898
10 Péter Petrecz HUN 4 56.5 54.9% +070 1847 1918 Pepe 10.5 1758 16 1982 10 2051 20.0 1884
11 Jérôme Papillon FRA 3 30.0 56.5% +093 1817 1911 papillon 8.0 2031     10 1843 12.0 1888
12 Jason AUS 4 41.5 53.0% +043 1859 1903 Phantom 8.0 2029 16 1911 9 1927 8.5 1745
13 Justin Phillips NZL 3 46.5 50.7% +010 1885 1895 Justin     16 1645 9 1833 21.5 2107
14 Alex Kowalczyk AUS 3 27.5 50.6% +009 1871 1881 AlexK 8.0 2115     9 1890 10.5 1696
15 Julia Schwarz GER 2 21.5 51.2% +018 1858 1877 jade 10.5 1917     11 1838    
16 Phil Sneddon NZL 2 21.5 49.5% -007 1868 1862 Runes         9 1884 12.5 1846
17 Shaun Cooper NZL 1 21.0 54.0% +057 1769 1828 scoop             21.0 1828
18 Leanne Silver NZL 1 20.5 50.4% +006 1792 1798 Tonto             20.5 1798
19 Laszlo Harsanyi HUN 4 52.5 44.7% -075 1870 1796 leslie 10.5 1738 16 1792 10 1555 16.0 1989
20 Dave Dyer USA 4 50.0 44.5% -078 1856 1779 ddyer 10.0 1696 16 1776 7 1754 17.0 1841
21 Murray Pharaoh NZL 1 18.5 48.3% -024 1771 1748 Scarab             18.5 1748
22 Jim Tarsi USA 2 25.0 44.0% -085 1826 1742 JimT     16 1776     9.0 1682
23 Wendy Sykes AUS 2 15.0 26.2% -361 1882 1521 Aussie         9 1435 6.0 1651
 
Tantrix Tournament Elo Ratings - Unofficial List (G<15) at 31 December 1999
Introduction to Tantrix Tournament Elo Ratings
Click here for the Tournament Seeding list as at 31 January 2000
(click a tournament name to see results for that event only)
PLAYER DETAILS 1999 OVERALL ELO RATING Current INDIVIDUAL TOURNAMENT RATINGS
  Name Country T G TP % Fctr AOR * Elo * Lobby Masters Open Contl World
Rating Nickname G Elo G Elo G Elo G Elo
 
U1 Chris Peek NZL 1 9.0 62.8% +184 1863 2048 Chriz         9 2048    
U2 Sandrine Papillon FRA 1 10.5 55.6% +079 1901 1981 didi 10.5 1981            
U3 Wolfgang Schwarz GER 1 10.0 57.0% +100 1852 1953 space         10 1953    
U4 Bevan Chong NZL 1 14.5 53.8% +055 1893 1949 Mighty             14.5 1949
U5 Bhavic NaNa RSA 1 10.0 56.5% +093 1853 1947 NaNaKat         10 1947    
U6 Keith Ammann USA 1 7.0 56.4% +092 1837 1929 geenius         7 1929    
U7 Irene Dyer USA 1 7.0 52.9% +041 1848 1890 idyer         7 1890    
U8 Jean-Louis Potier FRA 1 14.0 58.1% +115 1739 1855 Iznogoud             14.0 1855
U9 Jon Tullett RSA 1 10.0 47.0% -043 1865 1824 clove         10 1824    
U10 Philip Hirschhorn AUS 1 9.0 43.9% -087 1890 1804 elfie         9 1804    
U11 Silvio Leonardi SUI 1 12.5 53.4% +049 1754 1803 Tell             12.5 1803
U12 Tessa Kerr NZL 1 8.0 43.8% -089 1887 1799 Sara 8.0 1799            
U13 Al Kerr NZL 1 10.5 46.4% -051 1830 1780 offpiste             10.5 1780
U14 Hilary Boyd NZL 1 11.5 46.6% -049 1811 1763 Pandora             11.5 1763
U15 Joche Cortina MEX 1 5.5 43.6% -091 1797 1707 Joche             5.5 1707
U16 Alex Pearson USA 1 9.5 45.2% -068 1773 1706 Pfire             9.5 1706
U17 Pavel Petrovic NOR 1 10.0 38.0% -173 1877 1705 Palo         10 1705    
U18 Raymond Hemmecke GER 1 8.5 46.3% -053 1743 1691 regit/ramon             8.5 1691
U19 Xavier Picard FRA 1 11.5 48.9% -016 1697 1682 xavier/gadjo             11.5 1682
U20 Cindy Tarsi USA 1 8.0 42.5% -107 1772 1666 Cindy             8.0 1666
U21 Luc Bailleul FRA 1 10.0 34.5% -226 1882 1657 luke         10 1657    
U22 Stéphanie Valois CAN 1 8.0 42.6% -106 1746 1641 Dove             8.0 1641
U23 Thomas Peek NZL 1 6.0 29.1% -311 1943 1633 kingkong             6.0 1633
U24 Jean Martinet FRA 1 8.5 39.4% -152 1783 1632 Jean             8.5 1632
U25 John Antony NZL 1 6.0 33.8% -237 1861 1624 Caotik             6.0 1624
U26 Paul Martinsen NZL 1 11.0 43.8% -089 1702 1614 Ponder             11.0 1614
U27 Alida Remiens NZL 1 5.5 35.2% -215 1815 1601 JustAsk             5.5 1601
U28 Kristian Jaakkola FIN 1 5.5 35.0% -218 1814 1597 Jaakkola             5.5 1597
U29 Didier Elbèze FRA 1 5.0 35.0% -218 1789 1571 Dide             5.0 1571
U30 Joshua Warren USA 1 5.0 33.3% -244 1793 1550 Ravnos             5.0 1550
 
VERY unofficial list - G<5 - these players have played only one opponent or half or less of an all-play-all event
 
Z1 Gilles Parmentier FRA 1 3.0 42.5% -107 2023 1917 glea             3.0 1917
Z2 Marina McManaway NZL 1 3.5 45.0% -071 1975 1905 Marina             3.5 1905
Z3 Fred Trivett USA 1 2.5 50.0% 000 1796 1797 PizzaMan 2.5 1797            
Z4 Melinda Barry BRU 1 3.0 45.0% -071 1748 1678 melinda             3.0 1678
Z5 Kat West NZL 1 3.0 35.0% -218 1862 1645 Katse             3.0 1645
Z6 Chandan Kudige USA 1 4.0 28.8% -317 1892 1576 ckudige         4 1576    
Z7 Ilona Halbach GER 1 3.0 40.0% -143 1706 1563 fraufuchs             3.0 1563
Z8 Benoît Vandaele FRA 1 4.5 20.0% -476 1886 1411 ChBen             4.5 1411
Z9 Seri Al-Najjar GBR 1 1.0 20.0% -476 1877 1401 Psyche         1 1401    
Z10 Jésus USA 1 2.0 20.0% -476 1779 1304 cyberjesus 2.0 1304            
 

Key:

Pos is the player's position, a bold number if in the official list. To compare those in the official and unofficial lists reasonably fairly, Click here for the Tournament Seeding list as at 31 January 2000.

T is the number of tournaments in which the player has played at least one game, with the WTC and Plate competitions counted as the same event.

G for a tournament is a measure of the number of games played. It is one for each game played in an event where one or two games are played against each opponent. For matches of three or more games, only an extra half is counted for each game after the second. TP % and AOR are also de-weighted accordingly, though each game in a match is given equal weighting in finding the TP % for that particular match. For more details, please see section 4) (amended at the end of August) on the rating method page.

TP % is the average (weighted by G) percentage of possible tournament points scored by the player in their games.

Fctr is the performance factor implied by TP %, read off an inverse normal distribution, as described on the rating method page.

AOR is the average (weighted by G) of the Elo ratings of the player's opponents - the higher the AOR, the better the opponents the player has played on average. In the Elo calculation, this allows for the fact that it is much easier to get a high TP % against weaker opponents.

* Elo * Rating is the player's overall Elo rating for 1999. It is equal to the AOR plus the performance factor based on the TP %. If this is one or two more than the sum of the figures in the table, don't worry - all the figures in the table are rounded but the figures actually used in the calculations are precise and normalisation of the results adds about 1 to every player's rating too. In future years, an exponential-type decay factor will be built in to gradually reduce the effect of tournaments played a long time ago

Individual Tournament Ratings show how stable or variable a player's performance has been in different tournaments.

Contl includes all single-continent Championships - if you click on this, you will need to click on the results sheet for the tournament concerned to find the full results.

Further information:

The following links contain more information. Those marked with *'s are fairly simple (I hope!), the others are aimed at the statistically-minded who might want to check out the mathematical theory behind the method and look for any flaws - I know there are some of you! :-)

* Simple interpretation of the ratings *

* Why do rating and tournament positions differ? *

* A table of Diff. v % TP *

How the difference table was calculated

Description of the theory and method

* Tournament categories *

* Tantrix Master titles *

BACK TO TANTRIX TOURNAMENTS RESULTS INDEX PAGE

The date and time are :

Friday, 16-May-2008 13:49:22 GMT
Friday, 16-May-2008 14:49:22 BST (local)

This file was last modified on Monday, 31-Mar-2003 00:24:31 BST

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